CARACTERIZAÇÃO DOS SOLOS E ANÁLISE DO ESTÁGIO DE DEGRADAÇÃO EM GLEBAS EM DIFERENTES AGROSSISTEMAS

Abstract

The objective of present work was of classifying, consonant the Brazilian System, profiles of soils of ecosystems, as subsidies to evaluation of soil quality. The fieldwork was driven at the place Chã de Jardim, municipal district of Areia, PB, Brazil. They were open trenches, in different agrosystems - sabiá population (T1), of pinus (T2), and traditional cultivation-degraded area (T3), where they were made the description and it collects of soil materials for accomplishment of the chemical and physical analyses. The soils were classified in the Brazilian System of Classification of Soils. Being adopted an operational sequence, the profiles of respective areas were classified as: Entisol, Oxisol and Inceptisol In terms of quality of soil and starting from an arbitrated minimum indication, it was verified that profiles under pinus population and sabiá have position privileged in relation to degraded area. In spite of drop reservation of nutrients of profiles (dystrophic), the recycling in the soil under leguminous (T1) it is more efficient, since the reservation of nutrients in the Entisol is smallest among the compared sub superficiality.